Crontabs Kindle 4 Touch

abishur · 12-27-2011, 02:10 PM

I was attempting to set up a script to run on @reboot with crontabs on the kindle 4 touch but nothing seems to be working with it. Even tried to output the log file but nothing happens, by all appearances it doesn't seem to be using crontabs (/etc/crontabs/root).

Has anyone had any luck setting up cron jobs on the kindle 4 touch?

duluoz · 01-01-2012, 09:16 AM

I can't see why crontab would be any different with the K4 touch. Presumably you're running crontab on a headless linux server?

It'd be useful to find out where it's failing. What commands are you running via cron? Presumably they work as expected when running them manually? And have you checked the mail of the account you're running cron under, as it will post mail once it's ran.

lumanz · 01-01-2012, 11:45 AM

cron works for me. Did you restart the service or device after the changing?

abishur · 01-02-2012, 08:41 AM

Yep

The specific command I was attempting to run was

@reboot (run script) > /mnt/us/log

I ran the script independently so I know that part worked just fine but it wouldn't run it when I edited /etc/crontabs/root to run the script, nor would it log the file (just for the record I tried with and without trying to log the event)

@lumanz were you also editing the crontabs folder, or were you editing it elsewhere? Were you also doing @reboot?

Oh, and I also tried having it run the command in the script directly rather than having it call a script to run

geekmaster · 01-02-2012, 08:54 AM

At reboot, accessing files on the /mnt/us partition fails with "Stale NFS mount" errors, during some parts of the reboot cycle. Perhaps you need to delay when cron starts your script, or have your script do a long sleep call before writing to /mnt/us/log. Or for testing, you could write to /var/local/log/mylog instead of /mnt/us/log.

duluoz · 01-02-2012, 10:00 AM

Have you checked the user mail though? Cron will mail the error to the user.
And have you tried running cron as a user rather than root?

lumanz · 01-02-2012, 10:06 AM

Quote:

Originally Posted by abishur

Yep

@lumanz were you also editing the crontabs folder, or were you editing it elsewhere? Were you also doing @reboot?

Yes, it's the same file. But I don't run reboot (I need the wifi to be turn on in the morning automatically).

abishur · 01-03-2012, 11:15 AM

I actually got what I wanted to happen via another method. Still not sure if the hang up was the @reboot part or something else. I might try to have it run a dummy script just to find out.

12-27-2011, 02:10 PM	#1
abishur Enthusiast Posts: 48 Karma: 33436 Join Date: Dec 2011 Device: Kindle 4 Touch	Crontabs Kindle 4 Touch I was attempting to set up a script to run on @reboot with crontabs on the kindle 4 touch but nothing seems to be working with it. Even tried to output the log file but nothing happens, by all appearances it doesn't seem to be using crontabs (/etc/crontabs/root). Has anyone had any luck setting up cron jobs on the kindle 4 touch?

01-02-2012, 08:54 AM	#5
geekmaster Carpe diem, c'est la vie. Posts: 6,433 Karma: 10773668 Join Date: Nov 2011 Location: Multiverse 6627A Device: K1 to PW3	At reboot, accessing files on the /mnt/us partition fails with "Stale NFS mount" errors, during some parts of the reboot cycle. Perhaps you need to delay when cron starts your script, or have your script do a long sleep call before writing to /mnt/us/log. Or for testing, you could write to /var/local/log/mylog instead of /mnt/us/log. Last edited by geekmaster; 01-02-2012 at 09:14 AM.

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01-01-2012, 09:16 AM	#2
duluoz Newsbeamer dev Posts: 122 Karma: 1000 Join Date: Dec 2011 Device: Kindle Voyage	I can't see why crontab would be any different with the K4 touch. Presumably you're running crontab on a headless linux server? It'd be useful to find out where it's failing. What commands are you running via cron? Presumably they work as expected when running them manually? And have you checked the mail of the account you're running cron under, as it will post mail once it's ran.

01-01-2012, 11:45 AM	#3
lumanz Member Posts: 15 Karma: 10 Join Date: May 2011 Device: Bold 9000/Kindle Keyboard/Kindle Touch	cron works for me. Did you restart the service or device after the changing?

01-02-2012, 08:41 AM	#4
abishur Enthusiast Posts: 48 Karma: 33436 Join Date: Dec 2011 Device: Kindle 4 Touch	Yep The specific command I was attempting to run was @reboot (run script) > /mnt/us/log I ran the script independently so I know that part worked just fine but it wouldn't run it when I edited /etc/crontabs/root to run the script, nor would it log the file (just for the record I tried with and without trying to log the event) @lumanz were you also editing the crontabs folder, or were you editing it elsewhere? Were you also doing @reboot? Oh, and I also tried having it run the command in the script directly rather than having it call a script to run

01-02-2012, 10:00 AM	#6
duluoz Newsbeamer dev Posts: 122 Karma: 1000 Join Date: Dec 2011 Device: Kindle Voyage	Have you checked the user mail though? Cron will mail the error to the user. And have you tried running cron as a user rather than root?

01-03-2012, 11:15 AM	#8
abishur Enthusiast Posts: 48 Karma: 33436 Join Date: Dec 2011 Device: Kindle 4 Touch	I actually got what I wanted to happen via another method. Still not sure if the hang up was the @reboot part or something else. I might try to have it run a dummy script just to find out.

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